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帶有IOS9的iPad上的UIImagePickerController

[英]UIImagePickerController on iPad with IOS9

從iOS 9和Xcode 7開始,我無法再在iPad(設備和模擬器)上實現UIImagePickerController。 以下代碼適用於iPad,但僅適用於iOS 9.使用iOS 9+時,顯示的圖像(在UIImagePickerController被取消后)是所選圖像的錯誤版本。 沒有重新調整大小或裁剪最終圖像只是原始圖像的右上角?? 另外一個問題 - 如果imagePicker.allowsEditing = false,你無法從PhotoLibrary中選擇圖像?

@IBAction func photoButton(sender: AnyObject) {    

    imagePicker.allowsEditing = true
    imagePicker.sourceType = .PhotoLibrary

    self.presentViewController(imagePicker, animated: false, completion: nil)

}


func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let pickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {

    self.imageView.image = pickedImage

    dismissViewControllerAnimated(true, completion: { () -> Void in
            })    

}

下面是UIImagePickerController中顯示的選定圖像的示例。 (注意所選圖像如何呈現非常小而不像以前那樣呈現屏幕的全尺寸/寬度)

在此輸入圖像描述

在UIImagePickerController中選擇使用按鈕后,最終圖像僅在原始圖像的右上角。 我在做錯了什么或是在iOS 9上破壞了UIImagePickerController?

在此輸入圖像描述

這是Apple的一個錯誤: http//openradar.appspot.com/radar?id = 5032957332946944

當前糟糕的解決方法:

 if UIDevice.currentDevice().userInterfaceIdiom == .Pad {
         imagePicker.allowsEditing = false
     } else {
         imagePicker.allowsEditing = true
     }

Swift 3.0:

if UIDevice.current.userInterfaceIdiom == .pad {
}

請參閱以下編碼

@IBAction func photoButton(sender: AnyObject)
{
   if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera))
   {
     picker!.sourceType = UIImagePickerControllerSourceType.Camera
     self .presentViewController(picker!, animated: true, completion: nil)
   }
   else
   {
     let alertWarning = UIAlertView(title:"Warning", message: "You don't have camera", delegate:nil, cancelButtonTitle:"OK", otherButtonTitles:"")
     alertWarning.show()
   }
}
func openGallary()
{
   picker!.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
   self.presentViewController(picker!, animated: true, completion: nil)
}

//PickerView Delegate Methods
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
{
   picker .dismissViewControllerAnimated(true, completion: nil)
   imageView.image=info[UIImagePickerControllerOriginalImage] as? UIImage
}
func imagePickerControllerDidCancel(picker: UIImagePickerController)
{
   println("picker cancel.")
}

你需要確保你的imageview有正確的框架,你的imageview的內容模式應該是aspectfit,而選擇器返回的圖像是[UIImagePickerControllerOriginalImage]類型

[imageView setFrame:imageViewRect];
[imageView setContentMode:UIViewContentModeScaleAspectFit];

迅速:

 imageView.setFrame(imageViewRect)
 imageView.setContentMode(UIViewContentModeScaleAspectFit)

並且來到allowsEditing屬性,它與照片選擇無關。

它是一個布爾值,指示是否允許用戶編輯選定的靜止圖像或電影。

如果要從相機庫中選擇照片,則需要將源類型修改為

    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

更新:

LEts表示您已選擇一個圖像並將其顯示在圖像視圖上。 我假設您在視圖上有一個imageview,並且imageview框架等於視圖框架。 如果IB是自由形式的,我假設IB中的imageview幀的大小為600x600。

如果你只是這樣做:

     _startImageView.image=_img;

結果將是:

在此輸入圖像描述

現在讓我們對要在imageview中顯示的圖像進行一些更改:

  CGRect scaledRect = AVMakeRectWithAspectRatioInsideRect(_img.size, CGRectMake(0, 0, self.startImageView.frame.size.width, self.startImageView.frame.size.height));
UIGraphicsBeginImageContext(CGSizeMake(_startImageView.frame.size.width,_startImageView.frame.size.height));
 [_img drawInRect:scaledRect];
UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

_startImageView.image=scaledImage;

現在圖像將是:

在此輸入圖像描述

選擇的原始圖像大小為640x426, 未縮放時

縮放到最大時選擇的原始圖像大小為1536x1286 (使用兩個手指縮放動作)

正如您所看到的,圖像中仍然沒有太大的變化, 這是因為在您的imageview收到圖像時圖像已被裁剪/縮放

所以即使你試着這樣做:

      [_img drawInRect:_startImageView.frame];

根據我們的需要不會繪制圖像,因為圖像已經在它們的右側縮放,因為拾取器給出的圖像是edited image

解:

要解決此問題,您需要在didFinishPickingMediaWithInfo:方法中從選擇器中選擇原始圖像

       info[UIImagePickerControllerOriginalImage];

它給你的形象:

在此輸入圖像描述

這段代碼與@ pkc456相似,只是稍微短一些。

這對我很有用:

   import UIKit

   class PostImageViewController: UIViewController,    UINavigationControllerDelegate, UIImagePickerControllerDelegate {

  @IBOutlet var imageToPost: UIImageView!

   @IBAction func chooseImage(sender: AnyObject) {

    var image = UIImagePickerController()
    image.delegate = self
    image.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    image.allowsEditing = false //or true additional setup required.

    self.presentViewController(image, animated: true, completion: nil)

}

         func imagePickerController(picker: UIImagePickerController,    didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {



    self.dismissViewControllerAnimated(true, completion:nil)

}

這有用嗎?

我正在研究xcode 7.1(Swift)並發現你的代碼合適。 我還在我的項目中編寫了以下代碼,並且它正在成功運行。

func showPicker(){
    let type = UIImagePickerControllerSourceType.PhotoLibrary
    if(UIImagePickerController.isSourceTypeAvailable(type)){
        let pickerController = UIImagePickerController()
        pickerController.delegate = self
        pickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        pickerController.allowsEditing = false
        self.presentViewController(pickerController, animated: true, completion: nil)
    }
}

func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!) {
    let imageView = self.view.viewWithTag(20) as! UIImageView
    let selectedImage : UIImage = image
    imageView.image=selectedImage
    self.dismissViewControllerAnimated(true, completion: nil)
}

代碼和代碼的唯一區別在於ImagePickerController實例的可見性。 供您參考,我上傳了我的代碼: - https://www.dropbox.com/s/pe0yikxsab8u848/ImagePicker-Swift.zip?dl=0

我的想法只是查看我的代碼一次,也許您會了解代碼的哪一部分出現故障。

您似乎正在使用IB和自動布局,但已設置了正確的約束。 嘗試在故事板中添加一些約束。

對我來說,我解決了,顯示模式為popover

  @IBAction func photoButton(sender: AnyObject) {

    imagePicker.allowsEditing = true
    imagePicker.sourceType = .PhotoLibrary

    let controller = self.imagePicker


    controller.modalPresentationStyle = UIModalPresentationStyle.Popover
    controller.modalTransitionStyle = UIModalTransitionStyle.CoverVertical
    let popover = controller.popoverPresentationController

    popover?.sourceView = self
    controller.preferredContentSize = CGSize(
        width: self.frame.width * 0.6,
        height: self.frame.height * 0.6
    )

    popover?.sourceRect = CGRectMake(
        CGRectGetMidX(self.bounds),
        CGRectGetMidY(self.bounds),
        0,
        0
    )


    self.presentViewController(self.imagePicker, animated: true, completion: nil)
}

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